Can anyone identify the instrument being played here (besides the lute)?

[CTyankee]

https://en.wikipedia.org/wiki/Conegliano_Altarpiece#/media/File:Madonna_in_trono_col_Bambino_fra_angeli_e_santi_-_Particolare_04.jpg

I would greatly appreciate it!

[Ocelot II]

1. It's a rebec, a forerunner of the violin.

https://en.wikipedia.org/wiki/Rebec

[CTyankee]

2. Hey, Ocelot! Thanks a lot! I'm writing about the lute and saw this painting and wondered about it.

I only know it is not a theorbo...

[Ocelot II]

3. I know someone who plays it:

https://www.facebook.com/watch/?v=598948040615613

[cachukis]

4. You know a lot.

[Ocelot II]

6. Music major, concentration in music history.

I don't know a lot in general but have some specialized and often useless knowledge in a few areas!

[cachukis]

7. Your contributions are very sound.

[bucolic_frolic]

5. A guess, but a mandolin?

[CTyankee]

8. see above. It's a rebec! I never heard of it before...